Hollywood actress Scarlett Johansson describes herself as being "very bendy and fierce" in the star-studded Avengers Assemble.
Johansson plays the Black Widow, originally seen in Iron Man 2, in the Marvel superhero blockbuster which also stars Robert Downey Jr (Iron Man), Tom Hiddleston (villain Loki), Mark Ruffalo (Hulk), Jeremy Renner (Hawkeye) and Clark Gregg (Agent Phil Coulson).
She told ITV1's Daybreak she performed her own stunts in the movie, working alongside stunt-double Heidi Moneymaker.
She said: "The idea is that she (Moneymaker) and I become one and we can start and finish each others moves and everything in between and it's a lot of training and dedication and it hurts and it hurts and it hurts and then suddenly it doesn't hurt and you're getting it right and it's a great feeling."
Speaking about the unforgiving outfit on Daybreak she said: "First of all every woman has body worries and I'm not exempt from that but part of the by-product of spending that much time in the gym is that you can fit into a catsuit."
Avengers Assemble, which also stars Samuel L Jackson and Gwyneth Paltrow, opens in cinemas on Thursday, April 26.